Spring loaded throw rod

Details Spring loaded throw rod Spring loaded throw rod

2006-09-12

2006-09-12

Le, Mark T. (Department: 3617)

Railway switches and signals

Switches

Connecting rods

C246S41500R

Reexamination Certificate

active

07104508

ABSTRACT:
A rail switch is provided having an improved throw rod to enable testing with damaging the switch. The throw rod includes a housing on its length, with a piston and spring located within the housing. A locking pin locks movement of the piston during normal operation, causing the throw rod to act as a solid rod as previously used in the art. The locking pin can be removed during gap testing, to enable a small amount of play in the length of the rod. This eliminates the stress caused on the switch by testing.

REFERENCES:
patent: 919871 (1909-04-01), Ingram
patent: 1480678 (1924-01-01), Feucht
patent: 2421822 (1947-06-01), Wood
patent: 2772844 (1956-12-01), McGowan

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